Home / 81,536.64-112,548.20-51,372.51

Finding the Fourth Proportional to 81,536.64, 112,548.20 and 51,372.51

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Solution

The fourth proportional to 81,536.64, 112,548.20 and 51,372.51 is: 70,911.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,536.64 : 112,548.20 = 51,372.51 : x
  2. Step 2: Convert to fraction form
    81,536.64/112,548.20 = 51,372.51/x
  3. Step 3: Cross multiply
    81,536.64x = 112,548.20 × 51,372.51
  4. Step 4: Simplify right side
    81,536.64x = 5,781,883,273.12
  5. Step 5: Solve for x
    x = 5,781,883,273.12/81,536.64
  6. Step 6: Final answer
    x = 70,911.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.